GAIL EXECUTIVE ENGINEER Geology Test Paper
Geology GAIL Engineering Practice Test
Q.1. In series-pipe applications
(a) Head loss through each pipe added to obtain
the total head loss
(b) Head loss is same through each pipe
(c) Friction factor is assumed for each pipe
(d) Flow increases
ANSWER: (d)
Q.2. The most economical section of a rectangular
channel for maximum discharge is obtained when its depth is equal to
(a) Half the breath
(b) Twice the breadth
(c) Same as the breadth
(d) One third the breadth
ANSWER: (c)
Q.3. When fluid flows in concentric circles, it is
known as
(a) Free circular motion
(b) Free rotational motion
(c) Free spiral vortex flow
(d) Free cylindrical vortex flow
ANSWER: (a)
Q.4. A simple pendulum of length l has an energy E, when its
amplitude is A. If the length of pendulum is doubled the energy will be
ANSWER:(b)
Q.5. To avoid a correction for the effect of capillarity
in manometers, diameter of tube should be
(a) Less than 1 mm
(b) Less than 3 mm
(c) Less than 4.5 mm
(d) More than or equal to 6 mm
ANSWER: (d)
Q.6. Separation is caused by
(a) Reduction of pressure to vapour pressure
(b) Reduction of pressure gradient to zero
(c) An adverse pressure gradient
(d) The boundary layer thickness reducing to zero
ANSWER: (d)
Q.7. Four cars, with a mass of 1500 kg each, are
loaded on a 6 m wide, 12 m long small car ferry.
How far, in cm, will it sink in the water ?
(a) 15.2
(b) 11.5
(C) 10.2
(d) 8.3
ANSWER: (a)
Q.8. What pressure, in MPa, must be maintained in
a diving bell at a depth of 1200 m, to keep out
the ocean wear (S = 1.03) ?
(a) 1.24
(b) 5.16
(c) 9.32
(d) 12.1
ANSWER: (d)
Q.9. The river flow during floods can be classified as
(a) Steady uniform flow
(b) Unsteady uniform flow
(c) Steady non-uniform flow
(d) Unsteady non-uniform flow
ANSWER: (d)
Q.10. In a flow field at the stagnation point
(a) Pressure is zero
(b) Total energy is zero
(c) Pressure head is equal to velocity
(d) All the velocity head is converted into
pressure head.
ANSWER: (b)
Q.11. Pressure at an elevation of 2000 m in an
isothermal atmosphere assuming T = 20°C and
P = 100 kPa is
(a) 87 kPa
(b) 82 kPa
(c) 79 kPa
(d) 21 kPa
ANSWER: (b)
Q.12.Wake always occurs
(a) Before a separation point
(b) After a separation point
(c) Before and after a separation point
(d) None of these
ANSWER: (b)
Q.13. Capillary action is due to the
(a) Viscosity of liquid
(b) Cohension of liquid particles
(c) Surface tension
(d) Adhesion of liquid particles on the surface
ANSWER: (c)
Q.14. Total drag on a body is the sum of
(a) Pressure drag and velocity drag
(b) Friction drag and velocity drag
(c) Friction drag and pressure drag
(d) Pressure drag, velocity drag and friction drag.
ANSWER: (c)
Q.15. Pressure force on the 15 cm die head light of an
automobile travelling at 0.25 m/s is
(a) l0.4 N
(b) 6.8 N
(c) 4.8 N
(d) 3.2 N
ANSWER: (b)
Q.16. Viscosity is the most important property in the
(a) Travel of a bullet through air
(b) Water jet issuing from a tire air
(c) Formation of soap bubbles
(d) Flow of castor oil through a tube
ANSWER: (c)
Q.17. In free vortex flow, the tangential velocity is
(a) Directly proportional to the radial distance
(b) Directly proportional to the square of the radial distance
(c)Inversely proportional to the radial distance
(d) Inversely proportional to the square of radial distance
ANSWER: (b)
Q.18. The radial component of velocity in a free vortex is
(a) Zero
(b) Directly proportional to radial distance
(c) Inversely proportional to radial distance
(c) Inversely proportional to the square of radial distance
ANSWER: (d)
Q.19. The upper surface of the weir over which water
flows is known as
(a) Nappe
(b) Crest
(c) Sill
(d) Vein
ANSWER: (b)
20. For a given velocity of projectile, the range is
maximum when the angle of projection is
(a) 30°
(b) 45°
(c) 90°
(4) 0°
ANSWER:(b)
21. The angle of projection at which, the horizontal
range and maximum height of projectile are equal is
ANSWER:(c)
22. The reversible polytrophic process is
ANSWER: (c)
23. A stone is thrown up a slope of inclination 
at
ata speed V and angle 
to the slope. The stone
to the slope. The stonereaches its greatest distance from the slope after
a time of
ANSWER:(c)
24. In the polytrophic equation, 
= constant, #tin
= constant, #tinvalue of n is infinite, the process is known as
(a) Constant pressure process
(b) Constant volume process
(c) Constant temperature process
(d) None of the above
ANSWER: (b)
25. If a projectile is fixed with an initial velocity of
10 m/sec at an angle 60 °to the horizontal, its
horizontal and vertical velocity at the highest
point of trajectory are
ANSWER:(b)
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